Film-winding spool for cameras



June 7, 1927. 1,631,302

G- WASHINGTON I FILM WINDING SPOOL FOR CAMERAS Original Filed Feb. 1926 INVENTOR mo loadsoe si1l4shwvrow ATTORNEY Patented June 7, 1927.

uuirsn s'rA GEORGE WASHI Origina such ends pleted.

prior application Ser.

The best tort known to me cmb lustrated in the ac ings in which:

Fig, 1 1s a plan'view designed to hold TES v 1,631,302 PATENT OFFICE.

INGTON, OEMENDHAM, NEW JERSEY.

FILM-WINDING sroonron CAMERAS.

rrom

ie film spool is coma division of my No. 85,130 filed Fob.

Fig. 2 is a detail horizo oil on line 2-2 of '1 application filed February 1, 192

he li rnily tinge r wi riding op the ca n of apparatus odying my lnvention 13 llcompanying sheet of drawaway or shown in section, and the casing removed. a

Fig. 3 1s a broken away, with the back of the c the spool.

4: is a de Flg.

H of Fig. 1

Fig.

ing pin shown in is a bottom view of a cross section of on on a larger scale. the drawings Fig. 6 the film and ing connecti Throughout Fig. 2, but with characters indicate like sents the main casing.

back for the main ca is put into i enough to a to be inserted in spool 105, so that a of the film have been expo's 0t pictures, s wound up on preferred form shown in the drawings, has flanges 106, 1 ed on the upper c'en lower centering pin rigidly mounted on hich latter is loosel ton 108, w

et in nged bearing 114: s

the flu use the 06, and is d detail elevation others shown 1n asmg removed to show consists esgraspod beo-ne hand of oration, and mera casing at present or aform of camera photographic films.

ntal section there- FigB, parts being broken the back of with parts section an tail vertical section on line is a detail horizontal section on line the lower centert'ull lines, and

he lower drivparts.

101 is a remova sing. film is first unrolled far llow the usual tab on its r'ree end the slot 105,

tter success ed for the taking aid exposed said take-up spool 105., The

of take-up spool .105, as

the usual end e spool 101' like reference 100 repreble hen the camera the take-up ive portions portions may be etachably tcring pin 107 110. Upper pin the under side 0 But supportand the 107 is t buty journale d in the top or the ton. and.

6, Serial NO 85,130. 2 1926. Serial No. 128,740.

' operating any Divided and this application filed August pin 10? are normally holdsaid button in said flanged bearing 11 1 by the spiral spring 109 which is confined between, the flanged bearing 11 1 and the flange 107 on the lower portion of the pin 107. Pin 107 has a lower end portion 107 which is reduced in diameter and engages a centrally bored-out portion 105" of the spool 105. The lower end of spool 105 is supported by the lower pin 1.10 which is carried by lower button 108 journaled in plate 115 fast on, or stamped up from, the bottom part of main casing 100. This pin 110 also enters the lower end of the hole 105 extending through spool 105 and is detachably locked to said spool by means of the cross pin 111 entering the transverse slot 105 in the bottom end of said spool. 112 is a small ratchet wheel rigidly mounted on pin 110 and cowith spring pawl 113, which latter is rigidly mounted on the fixed plate 115.

fmrced downward to It is evident from the above construction that when the operator grasps buttons 108 length that when the parts are assembled as shown in 1g. 3, the upper button 108 does not quite come to a bearing in its flanged holder 114. It, then, the operator rotates buttons 108 and 108 in a counterolockwise direction (looking at Figs. -1, 2 and 5),he will wind a portion of the film onto spool 105, mechanism 113, 112, will at all times'prevent unwinding action of said spool 105. But-tons 108 and 108 may have their outer surfaces corrugated as indicated in FigsQl, 4:a'nd 6 to prevent the operators thumb and finger slipping on them. i

In loading the camera, the casing back 101 is removed, the spool otfilm placed in position, the film tab wound up on spool 105 and the casing back replaced. The camera is then ready for operation. After each picture is taken the exposed portion of the film is wound up on spool 105, in the manner hereinbefore described, until all of the film has been used. To remove the film, the back 101 of the casin is taken off, the spool 10 5 pushed upward; spring .109

and the pawl and ratchet vionsly exposed film, is then removed, for

till

button and centering means development or storage of the film. An empty take-up spool may be then inserted by reversing this procedure, a new spool of film placed in, and threaded across, the camera, the back 101 replaced, and the apparatus will then be ready for continued use.

Various changes evidently could be made in the details of the particular embodiments of the various sub-combinations herein illustrated and described without departing from the principle of the invention so long as the general method of operation and cooperation herein indicated is preserved.

Having described my invention, I claim:

1. In a photographic camera, a take-up mechanism for the previously exposed portions of a sensitized film, w ich mechanism comprises, in combination, a casing, a spool adapted to fit into said casing and to be connected to that end of said film which has been previously exposed, two revoluble .buttons journaled in opposite walls of said casing and having their outer faces exposed, centering means for said spool carried by said buttons, and a driving connection between one of said buttons and said spool whereby the operator may grasp the exposed surfaces of said buttons between the thumb and forefinger of one hand and rotation of that hand positively rotate said spool.

2. A combination such as defined in claim 1 in which said driving connection is cletachable.

3. A combination such as defined in claim 1 in which said driving connection to one of said buttons is detachable, and the centering means for the other end. of the spool is spring-pressed against said spool.

A combination such as defined in claim 1 in which said driving connection to one *of said buttons isdetachable, and the other button and centering means carried thereby are movable toward and from said. spool.

5. A combination such as defined in claim 1 in which said drivingconnection to one of said buttons is detachable, and the other 7 carried thereby are ,movable toward and from said spool axiallytliereof but are elasti 'ally held in en gagement therewith.

6. 111 a photographic camera, a take-up mechanism for film to be camera, which mechanism comprises, in com bination, a casing, a spool adapted to be con nected to that end of a film which has been previously exposed having an axially disposed recess in each end, and two revoluble buttons journalled in opposite walls of said casing, each of said buttons carrying a centrally disposed pin adapted to engage one of said recesses in said spool when it .is placed between them, one of said buttons being incapable of axial movement and the other, being capable of slight movement in its journal bearing axially of said. spool and having an attached flange adapted to' bear on the adjacent end of said spool, whereby, when the operator grasps said buttons and presses them toward one another, said spool is thereby positively compressed between them. 7

7 A combination such as defined in claim 6 in which one of said pins has a positive but detachable driving connection with said spool.

8. A combination such as defined in claim 6 in which one of said pins has a positive but detachable driving connection with one end of said spool and the other pin is springpressed against the other end of said spool.

9. A combination such as defined in claim 6 in which one of said pins has a positive but detachable driving connection with said spool comprising a radial projection on said pin engaging a slot in said spool.

10. In a photographic camera, atake-up mechanism for the previously exposed portions of a sensitized film, which mechanism comprises, in combination, a casing, a spool adapted to fit into said casing and to be connected to that end of said film which has been previously exposed, tworevoluble but- .tons journaled in opposite walls of said cas-, ing and having their outer faces exposed, centering means for said spool carried by said buttons, and a driving connection between one of said buttons and said. spool, together with a pawl and ratchet mechanism adapted to permit rotation of the last men- 1tioned button in one direction only, whereby the operator may grasp the exposed surfaces of said buttons between the thumb and forefinger of one hand and by rotation of that hand in one direction only positively rotate said spool.

GEORGE WASHINGTON.

used in said 

